The O3 stars
- 1 March 1982
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 254, L15-L17
- https://doi.org/10.1086/183747
Abstract
A brief review of the 10 known objects in this earliest spectral class is presented. Two new members are included: HD 64568 in NGC 2467 (Puppis OB2), which provides the first example of an O3 V (f-asterisk) spectrum; and Sk -67 deg 22 in the Large Magellanic Cloud, which is intermediate between types O3 (f-asterisk) and WN6-A. In addition, the spectrum of HDE 269810 in the LMC is reclassified as the first of type O3 III (f asterisk). The absolute visual magnitudes of these stars are rediscussed.Keywords
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